Watch the Bedouin showing off their beasts while haggling furiously over the price. Located approximately 30 km outside of Riyadh, this is the largest camel market in the region. Prepare for a pretty strong smell.

This beautiful example of Spanish colonial architecture contains a small museum dedicated to the Spanish Inquisition's brutal persecution of heretics once carried out in these very chambers. Visitors can still see some of the torture devices used to extract confessions of heresy and witchcraft, along with some of the questions used in "witch" interrogations, which are still displayed on the museum wall. Needless to say, no prisoner could hope to be acquitted of their purported crimes against the Catholic Church, and most met their tragic end at the very guillotine still on display in the courtyard.

Housed in a beautifully restored Jesuit school building from 1612, the Museo Naval del Caribe covers in some detail the 500 years of Cartagena's maritime history. You'll find sunken ships, cannons, ship's bells, muskets, and other treasures here. The descriptions are in Spanish, so it's a good idea to get a guided tour.

Built around 1865, this fortress played an important role in the history of Riyadh. The recapture of the city happened here at the turn of the century. The sand coloured brick constructing with its four towers is a popular tourist attraction and provides a glimpse on the past of Saudi Arabia. The word musmak means 'strong or fortified.'